Sometimes people can't push a button to save themselves; and, a lot of elderly people, or even older-but-not-elderly people don't want to show themselves either to others or themselves that they need protection like this.
My mom had fall protection on her Apple Watch, for example, because she lived alone and was getting weaker.
It's unclear to me why the Apple Watch is better here. It needs to be charged daily, so people are certainly taking it off. Anything that you take off might not be on when you have an accident. Maybe I'm a weirdo, but if I'm sitting along in my house, I don't have my watch or phone on me. They are both useless to report that I've fallen and I can't get up.
Apple Watch is jewelry vs an obviously-ADA-focused device.
Some people have pride in their appearance and in their independence and don't want to think of themselves as needing such a device. It's not that the Apple Watch is better than the "I've fallen and I can't get up" device, it's that it's better than nothing, which is what they would have in the other case.
no monthly fee for the apple watch, it is also an apple watch, so it can find her phone for her as well and vibrate her wrist when she gets a call or text (she has poor hearing). It can also monitor her heart for issues. To be honest, I think these devices need to be subsidized for the elderly.
My mom had fall protection on her Apple Watch, for example, because she lived alone and was getting weaker.